In 2007-2008, Killorn was among U.S. prep leaders statistically all season. While the Deerfield co-captain cooled toward the end of the year, he still accumulated 24 goals and 27 assists for 55 points in 25 games.
Killorn is a good skater with outstanding acceleration. Despite being the youngest player in the 2007 draft class, Killorn displays uncanny poise and maturity. Good playmaking ability with a quick shot. Plays with a surprising amount of grit for his slight build. Red Line Report compared Killorn to NHLer Brian Rolston prior to the 2007 NHL Entry Draft calling him, "may be the most complete player in Massachusetts Prep ranks".
At less than 160 pounds Killorn is skinny as a rail and will need to bulk up significantly just to survive college hockey, let alone the pros. He also has never played above the prep hockey level and it remains to be seen how he will fare against better competition.
If Killorn sticks to his plan to get his Harvard degree, it will be a half a decade before the Lightning have the opportunity to sign him to an NHL entry contract. Killorn has the upside to be a 2nd liner at the top level, but it will take years of development, particularly physically, for him to reach that potential.